/**
 * @file llcorehttputil.h
 * @date 2014-08-25
 * @brief Adapter and utility classes expanding the llcorehttp interfaces.
 *
 * $LicenseInfo:firstyear=2014&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2014, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLCOREHTTPUTIL_H
#define LL_LLCOREHTTPUTIL_H

#include <memory>

#include "llassettype.h"
#include "llcorebufferarray.h"
#include "llcorebufferstream.h"
#include "llcorehttphandler.h"
#include "llcorehttpheaders.h"
#include "llcorehttpoptions.h"
#include "llcorehttprequest.h"
#include "llcorehttpresponse.h"
#include "llcoros.h"
#include "llerror.h"
#include "lleventcoro.h"
#include "llhttpconstants.h"
#include "llstring.h"
#include "lluuid.h"

// The base llcorehttp library implements many HTTP idioms used in the viewer
// but not all. That library intentionally avoids the use of LLSD and its
// conventions which aren't universally applicable. This module, using
// namespace LLCoreHttpUtil, provides the additional helper functions that
// support idiomatic LLSD transport via the newer llcorehttp library.

namespace LLCoreHttpUtil
{
	constexpr F32 HTTP_REQUEST_EXPIRY_SECS = 60.f;

// Attempts to convert a response object's contents to LLSD. It is expected
// that the response body will be of non-zero length on input but basic checks
// will be performed and error (false status) returned if there is no data.
// If there is data but it cannot be successfully parsed, an error is also
// returned. If successfully parsed, the output LLSD object, out_llsd, is
// written with the result and true is returned.
//
// @arg	response	Response object as returned in an HttpHandler onCompleted()
//					callback.
// @arg	log			If true, LLSD parser will emit errors as llinfos-level
//					messages as it parses. Otherwise, it *should* be a quiet
//					parse.
// @arg	out_llsd	Output LLSD object written only upon successful parse of
//					the response object.
//
// @return			Returns true (and writes to out_llsd) if parse was
//					successful. False otherwise.
bool responseToLLSD(LLCore::HttpResponse* response, bool log, LLSD& out_llsd);

// Creates a std::string representation of a response object suitable for
// logging. Mainly intended for logging of failures and debug information. This
// won't be fast, just adequate.
std::string responseToString(LLCore::HttpResponse* response);

// Issues a standard HttpRequest::requestPost() call but using an LLSD object
// as the request body. Conventions are the same as with that method. Caller is
// expected to provide an HttpHeaders object with a correct 'Content-Type:'
// header. One will not be provided by this call. You might look after the
// 'Accept:' header as well.
//
// @return	If request is successfully issued, the HttpHandle representing the
//			request. On error, LLCORE_HTTP_HANDLE_INVALID is returned and the
//			caller can fetch detailed status with the getStatus() method on the
//			request object. In case of error, no request is queued and the
//			caller may need to perform additional cleanup such as freeing a
//			now-useless HttpHandler object.
LLCore::HttpHandle requestPostWithLLSD(LLCore::HttpRequest* request,
									   LLCore::HttpRequest::policy_t policy_id,
									   const std::string& url,
									   const LLSD& body,
									   const LLCore::HttpOptions::ptr_t& options,
									   const LLCore::HttpHeaders::ptr_t& headers,
									   const LLCore::HttpHandler::ptr_t& handler);

LL_INLINE LLCore::HttpHandle requestPostWithLLSD(LLCore::HttpRequest::ptr_t& request,
												 LLCore::HttpRequest::policy_t policy_id,
												 const std::string& url,
												 const LLSD& body,
												 const LLCore::HttpOptions::ptr_t& options,
												 const LLCore::HttpHeaders::ptr_t& headers,
												 const LLCore::HttpHandler::ptr_t& handler)
{
	return requestPostWithLLSD(request.get(), policy_id, url, body, options,
							   headers, handler);
}

LL_INLINE LLCore::HttpHandle requestPostWithLLSD(LLCore::HttpRequest::ptr_t& request,
												 LLCore::HttpRequest::policy_t policy_id,
												 const std::string& url,
												 const LLSD& body,
												 const LLCore::HttpHandler::ptr_t& handler)
{
	LLCore::HttpOptions::ptr_t options;
	LLCore::HttpHeaders::ptr_t headers;
	return requestPostWithLLSD(request.get(), policy_id, url, body,
							   options, headers, handler);
}

// Issues a standard HttpRequest::requestPut() call but using an LLSD object as
// the request body. Conventions are the same as with that method. Caller is
// expected to provide an HttpHeaders object with a correct 'Content-Type:'
// header. One will not be provided by this call.
//
// @return	If request is successfully issued, the HttpHandle representing the
//			request. On error, LLCORE_HTTP_HANDLE_INVALID is returned and
//			caller can fetch detailed status with the getStatus() method on the
//			request object. In case of error, no request is queued and caller
//			may need to perform additional cleanup such as freeing a now
//			useless HttpHandler object.
LLCore::HttpHandle requestPutWithLLSD(LLCore::HttpRequest* request,
									  LLCore::HttpRequest::policy_t policy_id,
									  const std::string& url, const LLSD& body,
									  const LLCore::HttpOptions::ptr_t& options,
									  const LLCore::HttpHeaders::ptr_t& headers,
									  const LLCore::HttpHandler::ptr_t& handler);

LL_INLINE LLCore::HttpHandle requestPutWithLLSD(LLCore::HttpRequest::ptr_t& request,
												LLCore::HttpRequest::policy_t policy_id,
												const std::string& url,
												const LLSD& body,
												const LLCore::HttpOptions::ptr_t& options,
												const LLCore::HttpHeaders::ptr_t& headers,
												LLCore::HttpHandler::ptr_t handler)
{
	return requestPutWithLLSD(request.get(), policy_id, url, body, options,
							  headers, handler);
}

LL_INLINE LLCore::HttpHandle requestPutWithLLSD(LLCore::HttpRequest::ptr_t& request,
												LLCore::HttpRequest::policy_t policy_id,
												const std::string& url,
												const LLSD& body,
												LLCore::HttpHandler::ptr_t handler)
{
	LLCore::HttpOptions::ptr_t options;
	LLCore::HttpHeaders::ptr_t headers;
	return requestPutWithLLSD(request.get(), policy_id, url, body, options,
							  headers, handler);
}

// Issues a standard HttpRequest::requestPatch() call but using an LLSD object
// as the request body. Conventions are the same as with that method. Caller is
// expected to provide an HttpHeaders object with a correct 'Content-Type:'
// header. One will not be provided by this call.
//
// @return	If request is successfully issued, the HttpHandle representing the
//			request. On error, LLCORE_HTTP_HANDLE_INVALID is returned and
//			caller can fetch detailed status with the getStatus() method on the
//			request object. In case of error, no request is queued and caller
//			may need to perform additional cleanup such as freeing a now
//			useless HttpHandler object.

LLCore::HttpHandle requestPatchWithLLSD(LLCore::HttpRequest* request,
										LLCore::HttpRequest::policy_t policy_id,
										const std::string& url,
										const LLSD& body,
										const LLCore::HttpOptions::ptr_t& options,
										const LLCore::HttpHeaders::ptr_t& headers,
										const LLCore::HttpHandler::ptr_t& handler);

LL_INLINE LLCore::HttpHandle requestPatchWithLLSD(LLCore::HttpRequest::ptr_t& request,
												  LLCore::HttpRequest::policy_t policy_id,
												  const std::string& url,
												  const LLSD& body,
												  const LLCore::HttpOptions::ptr_t& options,
												  const LLCore::HttpHeaders::ptr_t& headers,
												  const LLCore::HttpHandler::ptr_t& handler)
{
	return requestPatchWithLLSD(request.get(), policy_id, url, body, options,
								headers, handler);
}

LL_INLINE LLCore::HttpHandle requestPatchWithLLSD(LLCore::HttpRequest::ptr_t& request,
												  LLCore::HttpRequest::policy_t policy_id,
												  const std::string& url,
												  const LLSD& body,
												  const LLCore::HttpHandler::ptr_t& handler)
{
	LLCore::HttpOptions::ptr_t options;
	LLCore::HttpHeaders::ptr_t headers;
	return requestPatchWithLLSD(request.get(), policy_id, url, body, options,
								headers, handler);
}

// The HttpCoroHandler is a specialization of the LLCore::HttpHandler for
// interacting with coroutines. When the request is completed the response will
// be posted onto the supplied Event Pump.
//
// The LLSD posted back to the coroutine will have the following additions:
// llsd["http_result"] -+- ["message"]	An error message returned from the HTTP
//										status.
//                      +- ["status"]	The status code associated with the
//										HTTP call.
//                      +- ["success"]	Success of failure of the HTTP call and
//										LLSD parsing.
//                      +- ["type"]		The LLCore::HttpStatus type associted
//										with the HTTP call.
//                      +- ["url"]		The URL used to make the call.
//                      +- ["headers"]	A map of name name value pairs with the
//										HTTP headers.

class HttpCoroHandler : public LLCore::HttpHandler
{
protected:
	LOG_CLASS(HttpCoroHandler);

public:
	typedef std::shared_ptr<HttpCoroHandler> ptr_t;
	typedef std::weak_ptr<HttpCoroHandler> wptr_t;

	HttpCoroHandler(LLEventStream& reply);

	static void writeStatusCodes(LLCore::HttpStatus status,
								 const std::string& url, LLSD& result);

	virtual void onCompleted(LLCore::HttpHandle handle,
							 LLCore::HttpResponse* response);

	LL_INLINE LLEventStream& getReplyPump()		{ return mReplyPump; }

protected:
	// this method may modify the status value
	virtual LLSD handleSuccess(LLCore::HttpResponse* response,
							   LLCore::HttpStatus& status) = 0;

	virtual LLSD parseBody(LLCore::HttpResponse* response, bool& success) = 0;

private:
	void buildStatusEntry(LLCore::HttpResponse* response,
						  LLCore::HttpStatus status, LLSD& result);

private:
	LLEventStream& mReplyPump;
};

// HttpCoroutineAdapter is an adapter to handle some of the boilerplate code
// surrounding HTTP and coroutine interaction.
//
// Construct an HttpCoroutineAdapter giving it a name and policy Id. After any
// application specific setup call the post, put or get method. The request
// will be automatically pumped and the method will return with an LLSD
// describing the result of the operation. See HttpCoroHandler for a
// description of the decoration done to the returned LLSD.
//
// Posting through the adapter will automatically add the following headers to
// the request if they have not been previously specified in a supplied
// HttpHeaders object:
//	 "Accept=application/llsd+xml"
//	 "X-SecondLife-UDP-Listen-Port=###"

class HttpCoroutineAdapter
{
protected:
	LOG_CLASS(HttpCoroutineAdapter);

public:
	static const std::string HTTP_RESULTS;
	static const std::string HTTP_RESULTS_SUCCESS;
	static const std::string HTTP_RESULTS_TYPE;
	static const std::string HTTP_RESULTS_STATUS;
	static const std::string HTTP_RESULTS_MESSAGE;
	static const std::string HTTP_RESULTS_URL;
	static const std::string HTTP_RESULTS_HEADERS;
	static const std::string HTTP_RESULTS_CONTENT;
	static const std::string HTTP_RESULTS_RAW;

	typedef std::shared_ptr<HttpCoroutineAdapter> ptr_t;
	typedef std::weak_ptr<HttpCoroutineAdapter> wptr_t;

	// Use this constructor if you really need to use your own (persistent)
	// HttpRequest.
	HttpCoroutineAdapter(const std::string& name,
						 LLCore::HttpRequest::ptr_t& request,
						 // using DEFAULT_POLICY_ID by default
						 LLCore::HttpRequest::policy_t policy_id = 0U);

	// Use this constructor for all other cases: it will create its own
	// HttpRequest on the fly.
	HttpCoroutineAdapter(const std::string& name,
						 // using DEFAULT_POLICY_ID by default
						 LLCore::HttpRequest::policy_t policy_id = 0U);

	~HttpCoroutineAdapter();

	// Executes a Post transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	LLSD postAndSuspend(const std::string& url, const LLSD& body,
						LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);
	LLSD postAndSuspend(const std::string& url, LLCore::BufferArray::ptr_t rawbody,
						LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD postAndSuspend(const std::string& url, const LLSD& body,
								 LLCore::HttpHeaders::ptr_t& headers)
	{
		return postAndSuspend(url, body, DEFAULT_HTTP_OPTIONS, headers);
	}

	LL_INLINE LLSD postAndSuspend(const std::string& url,
								  LLCore::BufferArray::ptr_t& rawbody,
								  LLCore::HttpHeaders::ptr_t& headers)
	{
		return postAndSuspend(url, rawbody, DEFAULT_HTTP_OPTIONS, headers);
	}

	LLSD postRawAndSuspend(const std::string& url,
						   LLCore::BufferArray::ptr_t rawbody,
						   LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						   LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD postRawAndSuspend(const std::string& url,
									 LLCore::BufferArray::ptr_t& rawbody,
									 LLCore::HttpHeaders::ptr_t& headers)
	{
		return postRawAndSuspend(url, rawbody, DEFAULT_HTTP_OPTIONS, headers);
	}

	LLSD postFileAndSuspend(const std::string& url, std::string filename,
							LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
							LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD postFileAndSuspend(const std::string& url,
									  std::string filename,
									  LLCore::HttpHeaders::ptr_t& headers)
	{
		return postFileAndSuspend(url, filename, DEFAULT_HTTP_OPTIONS,
								  headers);
	}

	LLSD postFileAndSuspend(const std::string& url, const LLUUID& assetid,
							LLAssetType::EType assettype,
							LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
							LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD postFileAndSuspend(const std::string& url,
									  const LLUUID& assetid,
									  LLAssetType::EType assettype,
									  LLCore::HttpHeaders::ptr_t& headers)
	{
		return postFileAndSuspend(url, assetid, assettype,
								  DEFAULT_HTTP_OPTIONS, headers);
	}

	LLSD postJsonAndSuspend(const std::string& url, const LLSD& body,
							LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
							LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD postJsonAndSuspend(const std::string& url, const LLSD& body,
									  LLCore::HttpHeaders::ptr_t& headers)
	{
		return postJsonAndSuspend(url, body, DEFAULT_HTTP_OPTIONS, headers);
	}

	// Executes a Put transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	LLSD putAndSuspend(const std::string& url, const LLSD& body,
					   LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
					   LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD putAndSuspend(const std::string& url, const LLSD& body,
								 LLCore::HttpHeaders::ptr_t headers)
	{
		return putAndSuspend(url, body, DEFAULT_HTTP_OPTIONS, headers);
	}

	LLSD putJsonAndSuspend(const std::string& url, const LLSD& body,
						   LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						   LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD putJsonAndSuspend(const std::string& url, const LLSD& body,
									 LLCore::HttpHeaders::ptr_t& headers)
	{
		return putJsonAndSuspend(url, body, DEFAULT_HTTP_OPTIONS, headers);
	}

	// Executes a Get transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	LLSD getAndSuspend(const std::string& url,
					   LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
					   LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD getAndSuspend(const std::string& url,
								 LLCore::HttpHeaders::ptr_t& headers)
	{
		return getAndSuspend(url, DEFAULT_HTTP_OPTIONS, headers);
	}

	LLSD getRawAndSuspend(const std::string& url,
						  LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						  LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD getRawAndSuspend(const std::string& url,
									LLCore::HttpHeaders::ptr_t& headers)
	{
		return getRawAndSuspend(url, DEFAULT_HTTP_OPTIONS, headers);
	}

	// These methods have the same behavior as @getAndSuspend() however they
	// are expecting the server to return the results formatted in a JSON
	// string. On a successful GET call the JSON results will be converted into
	// LLSD before being returned to the caller.
	LLSD getJsonAndSuspend(const std::string& url,
						   LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						   LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD getJsonAndSuspend(const std::string& url,
									 LLCore::HttpHeaders::ptr_t& headers)
	{
		return getJsonAndSuspend(url, DEFAULT_HTTP_OPTIONS, headers);
	}

	// Executes a DELETE transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	LLSD deleteAndSuspend(const std::string& url,
						  LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						  LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD deleteAndSuspend(const std::string& url,
									LLCore::HttpHeaders::ptr_t headers)
	{
		return deleteAndSuspend(url, DEFAULT_HTTP_OPTIONS, headers);
	}

	// These methods have the same behavior as @deleteAndSuspend() however they
	// are expecting the server to return any results formatted in a JSON
	// string. On a successful DELETE call the JSON results will be converted
	// into LLSD before being returned to the caller.
	LLSD deleteJsonAndSuspend(const std::string& url,
							  LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
							  LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD deleteJsonAndSuspend(const std::string& url,
										LLCore::HttpHeaders::ptr_t headers)
	{
		return deleteJsonAndSuspend(url, DEFAULT_HTTP_OPTIONS, headers);
	}

	// Executes a PATCH transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	LLSD patchAndSuspend(const std::string& url, const LLSD& body,
						 LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						 LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD patchAndSuspend(const std::string& url, const LLSD& body,
								   LLCore::HttpHeaders::ptr_t& headers)
	{
		return patchAndSuspend(url, body, DEFAULT_HTTP_OPTIONS, headers);
	}

	// Executes a COPY transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	//
	// Note: the destination is passed through the HTTP pipe as a header. The
	// header used is defined as: HTTP_OUT_HEADER_DESTINATION("Destination");
	LLSD copyAndSuspend(const std::string& url, const std::string dest,
						LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD copyAndSuspend(const std::string& url,
								  const std::string& dest,
								  LLCore::HttpHeaders::ptr_t& headers)
	{
		return copyAndSuspend(url, dest, DEFAULT_HTTP_OPTIONS, headers);
	}

	// Executes a MOVE transaction on the supplied URL and yield execution of
	// the coroutine until a result is available.
	//
	// Note: the destination is passed through the HTTP pipe in the headers.
	// The header used is defined as:
	// HTTP_OUT_HEADER_DESTINATION("Destination");
	LLSD moveAndSuspend(const std::string& url, const std::string dest,
						LLCore::HttpOptions::ptr_t options = DEFAULT_HTTP_OPTIONS,
						LLCore::HttpHeaders::ptr_t headers = DEFAULT_HTTP_HEADERS);

	LL_INLINE LLSD moveAndSuspend(const std::string& url,
								  const std::string& dest,
								  LLCore::HttpHeaders::ptr_t& headers)
	{
		return moveAndSuspend(url, dest, DEFAULT_HTTP_OPTIONS, headers);
	}

	void cancelSuspendedOperation();

	static LLCore::HttpStatus getStatusFromLLSD(const LLSD& results);

	// The convenience routines below can be provided with callback functors.
	// which will be invoked in the case of success or failure. These callbacks
	// should match this form.
	// @sa callbackHttpGet
	// @sa callbackHttpPost
	typedef boost::function<void(const LLSD&)> completionCallback_t;

	static void callbackHttpGet(const std::string& url,
								LLCore::HttpRequest::policy_t policy_id,
								completionCallback_t success = NULL,
								completionCallback_t failure = NULL);

	LL_INLINE static void callbackHttpGet(const std::string& url,
										  completionCallback_t success = NULL,
										  completionCallback_t failure = NULL)
	{
		callbackHttpGet(url, LLCore::HttpRequest::DEFAULT_POLICY_ID, success,
						failure);
	}

	static void callbackHttpPost(const std::string& url,
								 LLCore::HttpRequest::policy_t policy_id,
								 const LLSD& postdata,
								 completionCallback_t success = NULL,
								 completionCallback_t failure = NULL);

	LL_INLINE static void callbackHttpPost(const std::string& url,
										   const LLSD& postdata,
										   completionCallback_t success = NULL,
										   completionCallback_t failure = NULL)
	{
		callbackHttpPost(url, LLCore::HttpRequest::DEFAULT_POLICY_ID, postdata,
						 success, failure);
	}

	// Generic Get and post routines for HTTP via coroutines. These static
	// methods do all required setup for the GET or POST operation. When the
	// operation completes successfully they will put the success message in
	// the log at INFO level, If the operation fails the failure message is
	// written to the log at WARN level.
	static void messageHttpGet(const std::string& url,
							   const std::string& success = LLStringUtil::null,
							   const std::string& failed = LLStringUtil::null);
	static void messageHttpPost(const std::string& url, const LLSD& postdata,
							    const std::string& success,
							    const std::string& failed);

	// Cancels all suspended operations.
	static void cleanup();

private:
	LLSD buildImmediateErrorResult(const std::string& url);

	void saveState(const std::string& url,
				   LLCore::HttpHandle yielding_handle,
				   HttpCoroHandler::ptr_t& handler);

	void cleanState();

	LLSD postAndSuspend_(const std::string& url, const LLSD& body,
						 LLCore::HttpOptions::ptr_t& options,
						 LLCore::HttpHeaders::ptr_t& headers,
						 HttpCoroHandler::ptr_t& handler);

	LLSD postAndSuspend_(const std::string& url,
						 LLCore::BufferArray::ptr_t& rawbody,
						 LLCore::HttpOptions::ptr_t& options,
						 LLCore::HttpHeaders::ptr_t& headers,
						 HttpCoroHandler::ptr_t& handler);

	LLSD putAndSuspend_(const std::string& url, const LLSD& body,
						LLCore::HttpOptions::ptr_t& options,
						LLCore::HttpHeaders::ptr_t& headers,
						HttpCoroHandler::ptr_t& handler);

	LLSD putAndSuspend_(const std::string& url,
						const LLCore::BufferArray::ptr_t& rawbody,
						LLCore::HttpOptions::ptr_t& options,
						LLCore::HttpHeaders::ptr_t& headers,
						HttpCoroHandler::ptr_t& handler);

	LLSD getAndSuspend_(const std::string& url,
						LLCore::HttpOptions::ptr_t& options,
						LLCore::HttpHeaders::ptr_t& headers,
						HttpCoroHandler::ptr_t& handler);

	LLSD deleteAndSuspend_(const std::string& url,
						   LLCore::HttpOptions::ptr_t& options,
						   LLCore::HttpHeaders::ptr_t& headers,
						   HttpCoroHandler::ptr_t& handler);

	LLSD patchAndSuspend_(const std::string& url, const LLSD& body,
						  LLCore::HttpOptions::ptr_t& options,
						  LLCore::HttpHeaders::ptr_t& headers,
						  HttpCoroHandler::ptr_t& handler);

	LLSD copyAndSuspend_(const std::string& url,
						 LLCore::HttpOptions::ptr_t& options,
						 LLCore::HttpHeaders::ptr_t& headers,
						 HttpCoroHandler::ptr_t& handler);

	LLSD moveAndSuspend_(const std::string& url,
						 LLCore::HttpOptions::ptr_t& options,
						 LLCore::HttpHeaders::ptr_t& headers,
						 HttpCoroHandler::ptr_t& handler);

	static void trivialGetCoro(std::string url,
							   LLCore::HttpRequest::policy_t policy_id,
							   completionCallback_t success,
							   completionCallback_t failure);

	static void trivialPostCoro(std::string url,
								LLCore::HttpRequest::policy_t policy_id,
								LLSD postdata, completionCallback_t success,
								completionCallback_t failure);

	void checkDefaultHeaders(LLCore::HttpHeaders::ptr_t& headers);

private:
	std::string						mAdapterName;
	std::string						mURL;
	LLCore::HttpRequest::policy_t	mPolicyId;
	LLCore::HttpRequest::ptr_t		mRequest;
	LLCore::HttpHandle				mYieldingHandle;
	LLCore::HttpRequest::wptr_t		mWeakRequest;
	HttpCoroHandler::wptr_t			mWeakHandler;

	typedef fast_hset<HttpCoroutineAdapter*> instances_list_t;
	static instances_list_t			sInstances;
};

} // End namespace LLCoreHttpUtil

#endif // LL_LLCOREHTTPUTIL_H